Embrasure that once housed the 105mm Schneider main armament of the Channel Island Museum's "10.5" casement/bunker, St Ouen, Jersey.  The gun once covered a stretch of open beach as part of the defensive system constructed by the Germans on the west coast of Jersey.

Apart from ammunition storage (limited), the bunker incorporates a gas lock/gas room system (as I recall, to the left of the gun as you view it here) to allow the ignition gases from the cannon to be expelled from the structure without suffocating the occupants.

The British landing it was intended to repel never came - although it is possible that (other than in practice) the Schneider was fired on one occasion;  apparently, when "Operation Overlord" got under way, many of the German guns on Jersey (and there were very many) were fired off, it would seem, for effect.  There were no targets.  Best regards, JR.

Jaws of Death - Jersey, Channel Islands.

I have a photo of myself sitting on this somewhere.  Fixed fortification consisting of a tank turret, usually an obsolete type, mounted (preferably) in concrete as part (preferably) of a more general fixed fortification line.  The colloquial name "Tobruk" appears to derive from the fact that the British first came across them in North Africa, although they were actually constructed by the Germans as part of a number of fortified zones in Europe as well.

This particular "Tobruk" is mounted on "10.5" casemate/bunker, part of the heavily fortified defensive zone along the west coast of Jersey, Channel Islands.  The bunker's main armament consists of a 105 mm WW1 French-made Schneider cannon, covering an extensive beach to its south as part of a system of interlocking defense.  

This bunker has been restored by private enthusiasts and now houses the Channel Islands Military Museum which, while small (and necessarily cramped) is an Aladdin's Cave of WW II weapons, equipment and documents of relevance to (if not always directly originating from) the Germans' four-year occupation of the Channel Islands.  Much less well-known than the famous Jersey War Tunnels, this little gem is well worth a visit (visiting the interior of the bunker is an education in itself).  An initiative of private collectors, well worthy of support.

By the way - the steel pole visible behind the "Tobruk" is a flagpole used to fly the Jersey flag.  Best regards, JR.

"Tobruk" on Jersey.

MG-34 and MG-42 machine-guns in the collection of the Channel Islands Military Museum bunker, Jersey, Channel Islands.  Space available to accommodate the collection in the bunker is limited, so that things are a bit cramped.  It is still a great, if small, collection (housed in a structure which is an exhibit in itself) which would, I suspect, be of considerable interest to anybody In Here who happens to be on the island.  Best regards, JR.